Tin is a powerful text mode news reader. It features threaded news reading, regex driven killfiles/message selections, pgp encryption, ispell support, and can read from both a local spool or from a remote NNTP server.

The SeaMonkey project is a community effort to develop an all-in-one Internet application suite. It contains an Internet browser, email and newsgroup client with an included Web feed reader, HTML editor, IRC chat, and Web development tools, and is sure to appeal to advanced users, Web developers, and corporate users. It uses much of the Mozilla source code powering such successful siblings as Firefox, Thunderbird, Camino, Sunbird, and Miro.

Agora is a Web-based, threaded discussion tool, similar to Usenet newsgroups.
Agora remembers each user's preferences, and allows threaded, unread-only
browsing. It offers the ability to manage several different groups, with
different themes, forums, and administrators for each group. Agora offers a
basic Web-based ICQ client, as well as a Web-based notes system.

Taylor UUCP provides everything you need to make a UUCP
connection. It includes versions of uucico, uusched, uuxqt, uux,
uucp, uustat, uulog, uuname, uuto, uupick, and cu, as well as
uuchk (a program to check configuration files), uuconv (a
program to convert from one type of configuration file to
another), and tstuu (a test harness for the package).